Graham Buck's wife, Karen, said her life had been "turned upside down" by her husband's death.
Shortly before his murder, Mr Buck had returned for a long weekend in Poland, where he met his baby granddaughter for the first time.
More top news
The ex-US secretary of state and presidential candidate spoke at Trinity College Dublin.
The struggling department store chain secured the backing of more than 75% of creditors, including landlords, for a CVA.
Mohiussunnath Chowdhury told the Old Bailey he expected to be shot dead by police or soldiers when he produced it at Buckingham Palace.